<template>
  <Blank></Blank>
  <view style="text-align: center; padding: 30rpx 0; font-size: 40rpx">{{
    reTitle
  }}</view>
  <view class="viewport">
    <!-- 推荐封面 -->
    <view class="cover">
      <image :src="imageData" />
    </view>
    <!-- tab栏 -->
    <view class="tabs">
      <text
        class="text"
        @click="activeId = item.id"
        :class="{ active: activeId === item.id }"
        v-for="item in subTypesArr"
        :key="item.id"
      >
        {{ item.title }}
      </text>
    </view>
    <!-- 列表内容 -->
    <scroll-view scroll-y class="scroll-view" @scrolltolower="ScrollTolower">
      <view class="goods">
        <navigator
          hover-class="none"
          class="navigator"
          v-for="goods in goods[activeId]?.items"
          :key="goods.id"
          :url="`/pages/goods/index?id=${goods.id}`"
        >
          <image style="width: 100%;" class="thumb" :src="goods.picture"></image>
          <view class="name ellipsis">{{ goods.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ goods.price }}</text>
          </view>
        </navigator>
      </view>
      <view class="loading">正在加载...</view>
    </scroll-view>
  </view>
</template>
<script setup>
import  request  from "@/utils/http";
import { onLoad } from '@dcloudio/uni-app';
import { ref,computed } from "vue";

const imageData = ref(""); // 顶部大图片
const activeId = ref(""); //点击高亮标题ID
const reTitle = ref([""]); // 标题动态渲染
const subTypesArr = ref([]); // 分类标题渲染
const goods = ref({}) // 商品数据
// const data = ref({
//   url: urlMap.value[type].title, 
//   data:{
//     subType: activeId.value, // tab项的ID
//     page: 1, // 当前页
//     pageSize: 10 // 每页几条
//   }// url地址
// })
const urlMap = {
  1: { title: "特惠推荐", url: "/home/preference/mutli" },
  2: { title: "爆款推荐", url: "/home/inVogue/mutli" },
  3: { title: "一站买全", url: "/home/oneStop/mutli" },
  4: { title: "新鲜好物", url: "/home/new/mutli" }, 
};

let type = -1
onLoad(async (opa) => {
  type = opa.type
  reTitle.value = urlMap[type].title; // 动态设置导航栏标题   // uni.setNavigationBarTitle({ title: urlMap[type].title});
  const { result } = await request({ url: urlMap[type].url }) // 获取特惠推荐数据
  goods.value = result.goodsItems // 商品数据
  console.log("🚀 ~ file: recommend.vue:76 ~ onLoad ~ result.goodsItems:", result.goodsItems)
  subTypesArr.value = result.subTypes; // 分类标题数据赋值
  activeId.value = result.subTypes[0].id; // 点击高亮标题ID
  imageData.value = result.bannerPicture; // 顶部大图片赋值
});

const currentData = computed(() => {
  return goods.value[activeId.value]
})

const ScrollTolower = async()=>{
  if(currentData.value.page > currentData.value.pages){
    uni.showToast({ title: "没有更多数据啦", icon: "none" })
    return
  }
  const option = {
    url: urlMap[type].url,
    data: {
      page: currentData.value.page + 1,
      pageSize: 10,
      subType: activeId.value
    }
  }
  const { result } = await request(option)
  
  // 请求成功,手动的把自己存起来的 数据 页码+1.下次 请求分页的时候 页面才会递增 
  goods.value[activeId.value].page++

  // 数据合并
  goods.value[activeId.value].items = [...goods.value[activeId.value].items, ...result.goodsItems[activeId.value].items]

}
</script>

<style lang="scss" scoped>
page {
  height: 100%;
  background-color: #f4f4f4;
}
.viewport {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 180rpx 0 0;
  position: relative;
}
.cover {
  width: 750rpx;
  height: 225rpx;
  border-radius: 0 0 40rpx 40rpx;
  overflow: hidden;
  position: absolute;
  left: 0;
  top: 0;
  image {
    width: 100%;
  }
}
.tabs {
  display: flex;
  justify-content: space-evenly;
  height: 100rpx;
  line-height: 90rpx;
  margin: 0 20rpx;
  font-size: 28rpx;
  border-radius: 10rpx;
  box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
  color: #333;
  background-color: #fff;
  position: relative;
  z-index: 9;
  .text {
    margin: 0 20rpx;
    position: relative;
  }
  .active {
    &::after {
      content: "";
      width: 40rpx;
      height: 4rpx;
      transform: translate(-50%);
      background-color: #27ba9b;
      position: absolute;
      left: 50%;
      bottom: 24rpx;
    }
  }
}
.scroll-view {
  height: 70vh;
  overflow: hidden;
}
.goods {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0 20rpx 20rpx;
  .navigator {
    width: 340rpx;
    padding: 10rpx;
    margin-top: 20rpx;
    border-radius: 10rpx;
    background-color: #fff;
  }
  .thumb {
    width: 305rpx;
    height: 305rpx;
  }
  .name {
    height: 88rpx;
    font-size: 26rpx;
  }
  .price {
    line-height: 1;
    color: #cf4444;
    font-size: 30rpx;
  }
}
.goods .symbol,
.goods .decimal {
  font-size: 70%;
}
</style>
